TAC Research Bulletin

The TAC Research Bulletin highlights recently-published reports and articles from around the world with relevance to road transportation in Canada. Full text links are included, so you get more than just the abstract.

E.g., 02/26/2024
E.g., 02/26/2024
Monday, May 29, 2023 - 14:30
Many bridges are built without accommodations for active transportation users and only serve motorized traffic. The pedestrians and bicyclists who rely on these bridges are exposed to safety-related concerns and their access to equal employment opportunities and essential services may be hindered. The TRB National Cooperative Highway Research Program's...
Monday, May 29, 2023 - 14:30
The Infrastructure Institute has launched a study to examine the potential to capture increased land value resulting from new transit infrastructure. This model can accelerate the development of the critical public infrastructure at the heart of transit-oriented communities. Land value capture allows governments to reclaim a portion of increases in land...
Monday, May 29, 2023 - 14:30
Non-motorist fatalities pose a serious concern to traffic safety initiatives within the state of Utah. Past research has examined the characteristics associated with fatal pedestrian crashes in depth, however, considerably less study has been done to understand the contextual factors surrounding these incidents. Pedestrian crashes may be influenced by...
Monday, May 29, 2023 - 14:30
Performance management has become increasingly important for transportation agencies in recent years. A key component of performance management is setting targets, which can be challenging. NCHRP Web-Only Document 358: Developing a Guide to Effective Methods for Setting Transportation Performance Targets, from TRB's National Cooperative Highway...
Monday, January 30, 2023 - 15:45
Dedicated bus facilities are being installed across the country with many jurisdictions allowing cyclists to use these facilities. Known as shared-bus bike lanes (SBBLs), these facilities are built with two, often opposing, goals in mind: (1) provide a high-speed travel lane for buses and (2) provide a safe travel lane for cyclists. Using video observation and...
Monday, January 30, 2023 - 15:45
The existing Machine Learning (ML) models for vibration-based damage assessments often use highly compressed features or are restricted to preprocessed signals with fixed durations and sampling rates. Additionally, the learning capacities of ML models and computational resources are limited, which restricts using raw signals as direct input. This report studies...
Monday, January 30, 2023 - 15:45
The use of recycled concrete aggregates (RCA) as a replacement in new concrete has gained popularity worldwide as a method of reducing natural aggregate consumption. Many individual studies have been completed but little work has been done to analyze that work to make broad conclusions on RCA concrete mechanical properties. This report presents the development...
Monday, January 30, 2023 - 15:30
This report documents a project designed to update the current Austroads road deterioration (RD) models using the long-term pavement performance and long-term pavement performance maintenance (LTPP/LTPPM) dataset and other data available, such as the traffic speed deflectometer (TSD) datasets, to improve these models' explanatory power. A proof-of-concept...
Monday, January 30, 2023 - 15:30
This report documents a project designed to update the current Austroads road deterioration (RD) models using the long-term pavement performance and long-term pavement performance maintenance (LTPP/LTPPM) dataset and other data available, such as the traffic speed deflectometer (TSD) datasets, to improve these models' explanatory power. A proof-of-concept...
Monday, January 30, 2023 - 15:30
This report documents a project designed to update the current Austroads road deterioration (RD) models using the long-term pavement performance and long-term pavement performance maintenance (LTPP/LTPPM) dataset and other data available, such as the traffic sped deflectometer (TSD) datasets, to improve these models' explanatory power. The cracking RD model...
Monday, January 30, 2023 - 15:30
This report documents a project designed to update the current Austroads road deterioration (RD) models using the long-term pavement performance and long-term pavement performance maintenance (LTPP/LTPPM) dataset and other data available, such as the traffic speed deflectometer (TSD) datasets, to improve these models' explanatory power. A proof-of-concept...
Monday, January 23, 2023 - 18:30
This safety research report examines the data collection and analysis challenges associated with two of the most common types of micromobility devices: electric scooters (e-scooters) and electric bicycles (e-bikes). To do this, the National Transportation Safety Board (NTSB) conducted a scientific literature review; held discussions with subject matter experts...

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